Affordability for an HDB flat comes down to three rules from MAS: how big a loan you can take (LTV), how much of your income can go to all debt (TDSR), and how much can go to your home loan specifically (MSR). Add your CPF Ordinary Account (OA) savings for the downpayment and any CPF grants, and you have a realistic budget. Below we break down each rule in plain English and work through a S$8,000/month example. For a precise figure based on your own income, debts, and age, use the free tool at FindHomeLah.
Loan-to-Value (LTV) is how much of the price a bank will lend. For an HDB or private home, if you have no other outstanding housing loan, the bank can lend up to 75% of the purchase price or valuation, whichever is lower. That drops to 45% with one existing loan, and 35% with two or more. The remaining 25% (first-home) is your downpayment, and at least 5% must be in cash, the rest can come from CPF OA.
If you take an HDB concessionary loan instead of a bank loan, eligible first-timers can borrow up to 75% too, with a 20% downpayment payable fully from CPF OA - no cash needed.
Total Debt Servicing Ratio (TDSR) caps ALL your monthly debt (home loan, car loan, credit cards, personal loans) at 55% of your gross monthly income, and the bank stress-tests the home loan at an interest rate of 4%, not the actual rate.
Mortgage Servicing Ratio (MSR) is an extra HDB/Executive Condo rule: your monthly HDB instalment alone cannot exceed 30% of your gross monthly income. For HDB buyers, MSR is usually the tighter of the two.
Age cap: the loan must be fully paid off by the borrower's age 65, and the maximum tenure is 30 years for HDB (35 for private). Shorter tenures mean higher monthly instalments, which can lower your budget.
Your CPF Ordinary Account (OA) earns 2.5% per year and can be used for the downpayment and monthly instalments of an HDB flat. Many first-timers fund most or all of the 20-25% downpayment from OA, keeping cash in hand.
On top of OA, first-timers can get CPF housing grants that directly reduce the price. The Family Grant and Enhanced CPF Housing Grant (EHG) together can give up to S$120,000 for a family, or up to S$60,000 for a single buying with another single. The Proximity Housing Grant (PHG) adds S$30,000 if you buy near your parents. These grants can slash the loan you need, which lifts the price you can afford.
Assume a couple with S$8,000 combined gross monthly income, no other debts, no existing housing loan, and an age that allows a 25-year HDB loan.
MSR check: 30% of S$8,000 = S$2,400 maximum monthly instalment. Stress-tested at a 4% interest rate over 25 years, an instalment of about S$2,100-S$2,400 supports a qualifying bank loan of roughly S$360,000-S$420,000.
At 75% LTV, that loan implies a purchase price of about S$480,000-S$560,000 before grants and OA savings.
Add CPF OA savings for the downpayment. If the couple has S$120,000 combined in OA, that funds the 25% downpayment on top of the loan and lifts the affordable price toward roughly S$680,000-S$720,000.
Add an EHG of up to S$120,000 (income ceiling applies) and the same loan can stretch to a meaningfully higher flat, or be paid off faster with a smaller loan.
Result: as a rough guide, an S$8,000/month first-timer household can typically afford an HDB flat in the region of S$680,000-S$720,000, depending on age, loan tenure, OA balance, existing debts, and grants. This is an estimate, not a quote. National 4-room resale median is about S$667,000, so this budget is realistic for many towns.
Car loans, credit card instalment plans, and personal loans all count toward TDSR. A S$1,000/month car payment can cut your affordable price by tens of thousands.
A longer loan tenure lowers your monthly instalment and raises affordability, but only up to age 65 and the 30-year HDB cap.
Forgetting grants: first-timers who qualify for EHG/PHG often underestimate how much these add.
Using actual interest rates instead of the 4% stress-test when self-calculating will overstate what the bank will lend.
Hand rules are a start, but every budget depends on your exact income, debts, OA balance, age, and grant eligibility. FindHomeLah computes LTV, TDSR, MSR, BSD, and grants from public data and gives you a personalised range instantly - no sign-up, no cost.
Ask FindHomeLah in plain English, for example: "i earn 8000, how much hdb can i afford" or "stamp duty on a 1.5m condo" at https://findhomelah.com.
How much HDB can I afford on an S$8,000 monthly household income?
As a rough guide, a first-timer couple with no other debts and some CPF OA savings can typically afford an HDB flat in the region of S$680,000-S$720,000, depending on age, loan tenure, OA balance, and CPF grants. The exact number depends on the LTV (75%), MSR (30% of income = S$2,400/month) and your debts.
What is the difference between TDSR and MSR?
TDSR caps ALL your monthly debt at 55% of gross income, stress-tested at a 4% interest rate. MSR is an extra rule for HDB and Executive Condos that caps the home loan instalment alone at 30% of gross income. For HDB buyers, MSR is usually the binding limit.
Can I use CPF for the HDB downpayment?
Yes. CPF Ordinary Account (OA) savings, which earn 2.5% per year, can fund the downpayment and monthly instalments. For an HDB concessionary loan, the full 20% downpayment can come from OA. For a bank loan, at least 5% must be cash and the rest can be OA.
What is the maximum LTV for an HDB loan?
With no other outstanding housing loans, you can borrow up to 75% of the price or valuation. This drops to 45% with one existing loan and 35% with two or more. A lower LTV (55%/25%/15%) applies if the loan tenure exceeds 30 years or borrower age plus tenure exceeds 65.
Does FindHomeLah give financial advice?
No. FindHomeLah gives estimates based on public MAS/CPF/HDB rules and recent transaction data. Rules change, and your final loan amount depends on the bank's full credit assessment. Treat results as a planning guide, not advice or a loan offer.
Ready to see your real number? Ask FindHomeLah, \"i earn 8000, how much hdb can i afford\" at https://findhomelah.com and get an instant estimate built on live LTV, TDSR, and MSR rules.
Open FindHomeLah →Educational estimates from public HDB data — not financial advice. SG rules verified July 2026. All guides · Terms · Privacy